package com.fpc.java8.map;

import java.util.HashMap;
import java.util.Map;

public class map {
	
	public static void main(String args[]){  
        Map<String, Object> table = new HashMap<String, Object>();  
        table.put("fdasfdas", "12313");
        table.put("fdasfda", null); 
        table.putAll(null);//这里报空指针异常
        table.putAll( new HashMap<String, Object>() );
        table.putAll( new HashMap<String, Object>() );
              
    }  

}
